Ramsey and Cavani were involved in a scuffle after Arsenal were awarded a penalty late in the first half at the Emirates.
Relive the record night between Dortmund and Legia, Rostov's win over Bayern and more from Champions League matchday five.
With the penultimate round of fixtures complete Nick Ames picks the best Champions League XI with Lionel Messi and Marco Reus making it. But who else?
Barcelona forward Neymar equalled the record for Champions League assists in a single season during his team's 2-0 win at Celtic, according to Opta.
Any Arsenal fans who hoped this season would see them break out of the club's familiar cycle of disappointment have had cause for sober reappraisal.
Bayern Munich CEO Karl-Heinz Rummenigge has criticised Jerome Boateng for his off-field activities, telling Sky he needs to "come back down to earth."